Ionic polymer metal composites with electrochemically active electrodes
Johanson, U.; Punning, A.; Aabloo, A. (2016). Ionic polymer metal composites with electrochemically active electrodes. In: RSC Smart Materials (215−227). Royal Society of Chemistry .10.1039/9781782622581-00215.
Johanson, U.; Punning, A.; Aabloo, A.
RSC Smart Materials
Royal Society of Chemistry
3.1. Artiklid/peatükid lisas loetletud kirjastuste välja antud kogumikes (kaasa arvatud Web of Science Book Citation Index, Web of Science Conference Proceedings Citation Index, Scopus refereeritud kogumikud)
University of Tartu
Book Chapter © 2016 The Royal Society of Chemistry. The vast majority of the aqueous ionic polymer metal composite (IPMC) materials are fabricated with electrodes made of precious metals - gold or platinum. At first glance this may seem unreasonable, since there are several well-known metal plating methods using the substantially cheaper metals - copper or silver. In point of fact, an IPMC is a complicated electrochemical system in which the occurrence of the electrochemical processes depends on the applied voltage. In aqueous-based IPMCs, the electrolysis of water occurs at higher voltages. Due to the various electrochemical factors, the presence of a non-precious metal in an IPMC changes its behaviour drastically. On the one hand, it opens up new possibilities for better actuation. On the other hand, in the presence of non-precious metals, the unwanted side-reactions (e.g. the corrosion of electrodes) already occur at very low voltages. This chapter highlights the electrochemical aspect of IPMCs with electrodes made of precious metals as well as copper, silver, and nickel.